JP4137535B2 - Arrester operation monitoring device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an operation monitoring device for a lightning arrester frequently used in power equipment.
[0002]
[Prior art]
Lightning arresters play a very important role as equipment for protecting power transmission and distribution facilities and substation facilities from lightning damage. For example, large substations are equipped with a number of lightning arresters to protect important electrical equipment. These lightning arresters conduct under an abnormal voltage caused by a lightning surge to discharge a lightning current, and keep the voltage applied to the equipment below a protection level. Lightning arresters are used in such harsh environments, but once a lightning arrestor breaks down, the power equipment to be protected is damaged, so maintenance and soundness confirmation are important tasks. Therefore, a technique has been developed for diagnosing deterioration of a built-in non-linear resistance element by observing a normal leakage current of a lightning arrester (Japanese Patent Laid-Open No. 2000-321318). In addition, a technology has been developed that detects a terminal voltage change of a lightning arrester during a lightning strike, counts the number of lightning strikes, and estimates the degree of deterioration of the lightning arrester from the number of protection operations (JP 2001-23479 A).
[0003]
[Problems to be solved by the invention]
By the way, the conventional techniques as described above have the following problems to be solved.
What is obtained by measuring the leakage current in the normal state of the lightning arrester is the static characteristic, not the dynamic characteristic during the protective operation. It is difficult to accurately estimate the dynamic characteristics from the static characteristics of this arrester. On the other hand, since the lightning arrester absorbs a large amount of energy during the protection operation, the deterioration progresses as the number of protection operations increases, but it is not easy to determine whether it has deteriorated to the extent that repair or replacement is required. Although it is only necessary to be able to directly measure dynamic characteristics, an economical and practical technique for directly observing and recording the effect of a lightning surge on a lightning arrester has not been introduced yet. Even if the number of protection operations exceeds a certain number, the degree of deterioration of each lightning arrester varies greatly.
The present invention has been made paying attention to the above points, and an object of the present invention is to provide a lightning arrester operation monitoring device capable of constantly monitoring the operation state of a lightning arrester and collecting information suitable for its deterioration diagnosis.
It is another object of the present invention to provide a lightning arrester operation monitoring device that measures current energy flowing through a lightning arrester during a protective operation of the lightning arrester and accurately determines the deterioration state.
[0004]
[Means for Solving the Problems]
The present invention solves the above problems by the following configuration.
<Configuration 1>
A detector for detecting a current flowing through the grounding wire of the lightning arrester, a means for calculating an instantaneous value of the power passing through the lightning arrester from an output signal of the detector, and at least one lightning surge from the result of the calculation processing. And a means for computing electric energy that has passed through the lightning arrester.
[0005]
<Configuration 2>
The lightning arrester operation monitoring apparatus according to Configuration 1, further comprising means for transmitting the information related to the electric energy to the outside at a predetermined timing.
[0006]
<Configuration 3>
The apparatus for monitoring the operation of the lightning arrester according to Configuration 1, comprising a display device that receives information related to the electrical energy and calculates and displays a cumulative value of the electrical energy since the lightning arrester is started to be used. A lightning arrester operation monitoring device.
[0007]
<Configuration 4>
A detector for detecting a current flowing through a grounding wire of a lightning arrester, and means for calculating a time integral value of a current passing through the lightning arrester by at least one lightning surge from an output signal of the detector A lightning arrester operation monitoring device.
[0008]
<Configuration 5>
The lightning arrester operation monitoring apparatus according to Configuration 4, further comprising means for transmitting information relating to the time integral value of the current to the outside at a predetermined timing.
[0009]
<Configuration 6>
In the lightning arrester operation monitoring device according to Configuration 4, the information on the time integral value of the current is received, the means for calculating the electrical energy that has passed through the lightning arrester by one lightning surge, and the lightning arrester used. An apparatus for monitoring the operation of a lightning arrester, comprising: a display device that calculates and displays a cumulative value of the electric energy since the start.
[0010]
<Configuration 7>
A detector for detecting a current flowing through the grounding line of the lightning arrester, a means for measuring a leakage current flowing through the lightning arrester from an output signal of the detector, a means for digitally converting the measured leakage current value and transmitting a radio wave, An apparatus for monitoring the operation of a lightning arrester, comprising a display device for receiving and displaying the leakage current value transmitted by the radio wave.
[0011]
<Configuration 8>
A detector that detects the current flowing through the grounding wire of the lightning arrester, a multiplication circuit that calculates an instantaneous value of the power that has passed through the lightning arrester from the output signal of the detector and the terminal voltage of the lightning arrester, and an instantaneous value of the power An integration circuit that performs time integration to calculate electric energy that has passed through the lightning arrester by at least one lightning surge, a circuit that holds a peak value of the output of the integration circuit for a predetermined time, and a circuit that holds the integration circuit An apparatus for monitoring the operation of a lightning arrester, comprising: a circuit that digitally converts an output peak value and acquires data for monitoring the operation of the lightning arrester.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described using specific examples.
FIG. 1A is a substantial wiring diagram showing a specific example of a lightning arrester operation monitoring device of the present invention.
The lightning arrester 10 is used with a terminal 11 connected to a high-voltage terminal of a power device (not shown) and a terminal 12 connected to a ground-side terminal. The terminal 12 is grounded by a ground wire 13. A detector 21 is connected to an operation monitoring apparatus 20 that will explain the internal function later. The detector 21 is mounted so as to penetrate the ground wire 13.
[0013]
FIGS. 1B and 1C are internal wiring diagrams showing an example of the detector 21.
In the operation monitoring apparatus of the present invention, an air-core toroidal coil as shown in (b) or (c) of the figure is used. The one shown in FIG. 2B is a very general air-core toroidal coil in which terminals 24A and 24B are provided on the toroidal coil portion 23. The ground wire 13 is arranged so as to penetrate the center. As a result, an induced current due to a current flowing in the ground wire 13 flows in the toroidal coil portion 23. This induced current is taken out from the terminals 24A and 24B and is measured as a current flowing through the lightning arrester 10.
[0014]
On the other hand, what is shown in (c) is what is called a Rogowski type toroidal coil. In this coil, the lead wire of the terminal 24 </ b> A is disposed so as to penetrate the core portion of the toroidal coil portion 23. The Rogowski type current detector is also a general air core toroidal coil. Has almost the same function. However, as shown in the figure, the Rogowski type coil can be provided with a gap in the portion (c), and the detector 21 can be attached to the ground line 13 without removing the ground line 13 from the terminal 12 or the ground end. effective.
[0015]
The detectors of any of the above configurations (b) and (c) do not have a magnetic core, so that no magnetic saturation occurs, and the AC current waveform flowing through the ground line 13 can be faithfully output to the terminals 24A and 24B. The operation monitoring device 20 as described above can be manufactured in a sufficiently small size, and is attached in the immediate vicinity of the lightning arrester 10. Moreover, since it is attached to the place where it is difficult to take out a power supply, it is good to supply drive electric power with the solar cell panel 25 and the battery box 26. FIG. It is also possible to supply power from the battery box 26 to a plurality of other operation monitoring devices at the same time.
[0016]
When a lightning strike occurs, a steep lightning current that reaches a maximum of about 10,000 amperes (A) flows through the ground line 13 of the lightning arrester 10 within 50 microseconds. If this is attempted using a normal feedthrough current transformer, an accurate current waveform cannot be observed on the output side due to magnetic saturation and hysteresis of the magnetic core. Further, when the through-type current transformer is attached to the grounding wire of the lightning arrester, it is necessary to remove the grounding wire from the grounding terminal once, and it is impossible to work in a live line state to prevent danger.
[0017]
In the apparatus of the present invention, the detector 21 made of an air core toroidal coil is attached to the ground wire 13 of the lightning arrester 10. The air-core toroidal coil can provide input / output characteristics with no magnetic saturation and excellent linearity even when the primary current is about 10,000 amperes. In addition, a sufficiently small safe output current can be obtained as an input to the measurement circuit. Furthermore, it has a frequency characteristic that can respond to a signal of a high frequency component that reaches from the zero value to the peak value point within a few microseconds. Thus, for example, the lightning arrester 10 and the operation monitoring device 20 can be attached to a large number of power devices in a substation for operation.
[0018]
FIG. 2 is a block diagram showing a specific circuit configuration of the lightning arrester operation monitoring device of the present invention.
The lightning arrester 10 shown in the figure is provided with the ground wire 13 as described above, and a detector 21 is attached thereto. The output of the detector 21 is input to the integrating circuit 30. In addition to the integration circuit 30, the apparatus includes a multiplication circuit 31, an integration circuit 32, a reset circuit 33, a peak hold circuit 34, an A / D conversion circuit 35, and a transmission circuit 36. 3 and 4 show specific connection diagrams of these circuits. The integration circuit 30 shown in FIG. 2 is connected as shown in FIG.
[0019]
In FIG. 3A, the signal output from the output terminal 41 of the detector 21 is time-integrated by an integration circuit including an operational amplifier as shown in the figure. Since the integration circuit itself is known, a detailed description is omitted, but a waveform signal corresponding to the current flowing through the ground line 13 is output to the output terminal 42. This signal is output toward the multiplication circuit 31. Note that the circuit configuration and circuit constants of the integrating circuit 30 may be arbitrarily set as long as they have the intended function. The same applies to the circuits shown in FIGS. In the figure, A is an operational amplifier, R is a resistor, VR is a variable resistor, C is a capacitor, TR is a transistor, and D is a diode.
[0020]
The multiplication circuit 31 shown in FIG. 2 has a circuit configuration as shown in FIG.
As shown in this figure, a constant voltage signal V corresponding to the terminal voltage of the lightning arrester is input to one input terminal 43 of the multiplication processing integrated circuit. Further, the output signal of the integration circuit 30 shown in (a) is input to the other input terminal 44 of the multiplication circuit. The output terminal 45 of the multiplication circuit outputs an i × V signal corresponding to the product of both. That is, instantaneous power flowing through the lightning arrester 10 is obtained by the multiplication circuit 31.
[0021]
The integration circuit 32 shown in FIG. 2 is a circuit that calculates the energy for one lightning surge flowing through the lightning arrester 10 by time-integrating the output signal of the multiplication circuit 31. This has a circuit configuration as shown in FIG. The left half of this circuit is an integrating circuit, and the right half is an inverting circuit. These circuits are also very general connections and will not be described in detail. A value obtained by integrating the signal input to the terminal 46 for a predetermined time is output to the terminal 47. The inverting circuit is provided to match the polarity of the output terminal 48 with the polarity on the output side. The output of the integrating circuit 32 is simultaneously output to the reset circuit 33 and the peak hold circuit 34.
[0022]
The peak hold circuit 34 is connected as shown in FIG.
Although this figure is also a very general circuit, the maximum value of the signal input to the terminal 51 is held for a certain period of time. When a reset signal is input to the terminal 53, the held value is cleared. The terminal 52 outputs the held peak value. This is output toward the A / D conversion circuit 35 in FIG. 2, converted into a digital signal, and wirelessly transmitted through the transmission circuit 36. The peak hold circuit 34 can notify the receiving side of the energy of one lightning surge flowing through the lightning arrester 10.
[0023]
If the output signal of the integrating circuit 32 is left unattended, it gradually discharges and decreases over time. The peak hold circuit 34 has a function of maintaining the output level while the A / D conversion circuit 35 digitally converts the peak value of the output of the integration circuit 32. The reset circuit 33 has a function of starting an operation when a constant output is obtained from the integrating circuit 32 and outputting a reset signal to the peak hold circuit 34 after measuring a predetermined time. By this reset circuit 33, the output of the peak hold circuit 34 is cleared at a predetermined timing after the digital conversion process and the transmission process, and the output signal of the next integration circuit 32 can be received.
[0024]
As shown in FIG. 4B, the reset circuit 33 is divided into a comparator portion and a timer portion. The signal input from the terminal 54 is compared with a certain reference value by the comparator, and the timer 55 is started when the reference value is exceeded. Since there is no operation when there is no output of the integrating circuit 32, useless power consumption is prevented. The one-shot multivibrator transmits a reset signal to the peak hold circuit after a certain period of time has elapsed since startup. The lightning surge waveform has a length of about several tens of microseconds, and when this is detected, a predetermined calculation process is performed, and the time until the data transmission is completed is defined as one cycle. This one-cycle time is a fixed time set in the one-shot multivibrator. This fixed time is set to 0.6 seconds, for example.
[0025]
In the above circuit, the detector (FIG. 1) formed of an air-core toroidal coil extracts a signal corresponding to the differential waveform of the primary current waveform by electromagnetic induction. The output signal of the air-core toroidal coil is input to the integrating circuit 30. In the present invention, the cumulative value of the electrical energy that flows to the lightning arrester due to the lightning surge makes it possible to estimate the degree of deterioration of the lightning arrester. A circuit for obtaining this electric energy was connected to the output side of the air-core toroidal coil. The output of the integration circuit 30 corresponds to the instantaneous current value i flowing through the grounding line of the lightning arrester. On the output side of the integration circuit 30, a multiplication circuit 31 that calculates a product iv of the output of the integration circuit 30 and the terminal voltage v of the lightning arrester is provided. An actual measured value of the terminal voltage of the lightning arrester 10 may be input to the terminal 43. However, since the terminal voltage v of the lightning arrester is substantially constant during the protection operation, a constant value corresponding to the multiplication coefficient signal of the multiplication circuit may be supplied without inputting the actual measurement value. The output iv of the multiplier circuit 31 is a signal corresponding to the instantaneous power passing through the lightning arrester.
[0026]
FIG. 5 is an explanatory diagram of an apparatus that receives a signal transmitted from the operation monitoring apparatus 20 illustrated in FIG.
For example, it is assumed that a large number of operation monitoring devices 20A, 20B, and 20C are provided as shown in the figure. From these, information indicating the value of the measured electric energy is transmitted by radio wave at an arbitrary timing after observation of a lightning surge. This is received by the receiver 60. The signal received by the receiver 60 is processed by the host computer 61. As a result, as shown in the screen 62 in the figure, the lightning surge detection time and the value of the passed electric energy are displayed as a list for all the lightning arresters. The accumulated value is also displayed. This cumulative value is obtained by integrating and accumulating electric energy that has flowed to the lightning arrester 10 immediately after the lightning arrester 10 is newly installed. By comparing the accumulated values, it is possible to determine how much the lightning arrester has deteriorated.
[0027]
6A and 6B are explanatory diagrams demonstrating the specific operation of the detector 21 shown in FIG. 1, wherein FIG. 6A shows operating characteristics for a rectangular wave, and FIG. 6B shows operating characteristics for a triangular wave.
In each graph shown in FIG. 6, the horizontal axis represents time, and the vertical axis represents the signal level. Ri is a current flowing through the ground line 13, i ′ is a differential waveform detected by the detector 21, and i is an output signal waveform of the integrating circuit 30. Regardless of whether a rectangular wave or a triangular wave is input, the output signal of the integrating circuit 30 has a waveform that faithfully reproduces the current flowing through the ground line 13. Since the rising portion of the lightning surge is close to a rectangular wave and the falling portion is close to a triangular wave, the objective can be sufficiently achieved with this characteristic.
[0028]
FIG. 7 is an explanatory diagram of signal waveforms before and after the multiplication circuit 31 shown in FIG.
In each graph, the horizontal axis is the time axis. In the present invention, the current waveform of the current flowing through the lightning arrester 10 by one lightning surge is detected, the electric energy flowing through the lightning arrester 10 is calculated therefrom, and the result is transmitted. FIG. 7A shows a current waveform flowing in the lightning arrester 10 due to a lightning surge. The multiplier circuit 31 obtains the product of the current i and the voltage V as shown in FIG. When this is integrated, for example, for T time, the electrical energy E that has passed through the lightning arrester 10 is obtained. The time T should be set to an appropriate value in consideration of errors. The electrical energy value E increases with time as shown in (c) of the figure, and when the lightning surge disappears, it decreases as indicated by the broken line in (c). This maximum value is held in the peak hold circuit and digitally converted.
[0029]
In the above example, the electric energy flowing through the lightning arrester 10 is calculated on the operation monitoring device 20 side. However, for example, the time integral value of the current i flowing through the lightning arrester 10 may be calculated, the result may be transmitted, and the electric energy may be calculated by multiplying the value corresponding to the voltage on the receiving side. In this way, the circuit configuration of the operation monitoring device 20 can be further simplified. In any case, since the calculation result of the current passed through the lightning arrester by one lightning surge is collectively sent and the result is transmitted, there is an effect that the high-speed data communication function is not necessary.
[0030]
In addition, since the monitoring signals can be transmitted from the plurality of monitoring circuits to the host computer at sufficiently wide time intervals, the signals can be received and processed without difficulty on the host computer side. In order to prevent collision of transmission signals, the host computer side can also periodically request data transmission to each operation monitoring device by a polling method, for example. In addition, the operation monitoring device 20 may be configured to record and hold the time integral value of electric energy and current obtained by calculation processing in a memory or the like and read it by any means. Further, for example, instead of one lightning surge, several times may be collected and the accumulated result may be transmitted to the host computer. Furthermore, if the analog circuit is used as described above, general-purpose parts can be combined to form a small and inexpensive device. For example, a part of the circuit may be replaced with a digital circuit or a computer to perform similar arithmetic processing. You can also.
[0031]
Further, the operation monitoring device 20 may be provided with a display such as a liquid crystal display for displaying the calculation processing result. Radio waves are preferably used to transmit the calculation results to the outside. Of course, the calculation result may be transmitted to the outside through a data communication cable such as an optical fiber. At the moment of a lightning strike, noise is intense and erroneous transmission of data is likely to occur. However, if the calculation result is transmitted after the calculation process is completed, erroneous transmission can be reduced.
[0032]
FIG. 8 is a block diagram showing an embodiment of a more specific embodiment of the apparatus of the present invention.
In the above embodiment, the result of measuring the lightning surge flowing through the lightning arrester 10 was transmitted by radio wave, and the measurement result could be monitored by a host computer in a monitoring office or the like. In the high-voltage substation equipment, a lightning arrester is attached to each of the RST three phases, so that the detectors 21R, 21S, and 21T are attached to the three lightning arresters 10R, 10S, and 10T. These outputs are input to the processing circuits 71R, 71S, and 71T described with reference to FIG. The processing circuits 71R, 71S, 71T are circuits that process up to a state immediately before the output signals of the detectors 21R, 21S, 21T are input to the A / D conversion circuit 35 shown in FIG. The content may be as shown in FIG.
[0033]
Furthermore, in this embodiment, not only the lightning surge measurement but also the lightning arrester leakage current measurement in normal times is performed. As shown in the figure, detectors 75R, 75S, and 75T each including a toroidal coil including a magnetic core, and amplification circuits 76R, 76S, and 76T that amplify the outputs of these detectors are provided. A toroidal coil containing a magnetic core has a split structure and is suitable for being easily attached to the ground wire of the lightning arrester 10. The outputs of the processing circuits 71R, 71S, 71T and the outputs of the amplifier circuits 76R, 76S, 76T are all input to the A / D conversion circuit 80. The A / D conversion circuit 80 includes six input terminals, and has a function of sampling an analog signal input to each input terminal at a predetermined sampling interval and converting it into a digital signal.
[0034]
On the output side of the A / D conversion circuit 80, a CPU 81 (arithmetic processing unit), a memory 82, a clock circuit 83, and a communication control unit 84 are provided. The output signal of the A / D conversion circuit is edited by the CPU 81 and stored in the memory 82. In this type of monitoring device, since the measurement time of data becomes a problem, the CPU 81 is configured to acquire time data from the clock circuit 83. Data 91 and 92 stored in the memory 82 are shown in the upper right of the figure. The leakage current is stored as one data together with the measurement time. The energy is also stored as one data along with the measurement time. The communication control circuit 84 transmits the data 91 and 92 stored in the memory through the antenna 85 at a predetermined timing.
[0035]
The leakage current of the lightning arrester 10 may be measured, for example, every 10 minutes or every hour and transmitted to the host computer. Therefore, the CPU 81 may be activated at this interval to perform data sampling and transmission control. Thereby, the power saving effect in the case of driving this apparatus by using a solar cell or the like as a power source can be expected. Further, since the passing energy due to a lightning surge is measured when a lightning occurs, it is preferable that the CPU 81 is activated each time and the operation is automatically terminated when data transmission is completed after a predetermined time. In addition, the leakage current may be transmitted at least once as a measurement result every predetermined time. For example, the results measured every 10 minutes may be stored in the memory for 1 hour and transmitted every 1 hour.
[0036]
The passing energy due to the lightning surge should be stored in the memory and the data transmitted when the lightning has moved away. Thereby, the transmission radio wave is not affected by lightning noise. During the operation of the peak hold circuits of the processing circuits 71R, 71S, and 71T, the A / D conversion circuit 80 performs digitization processing of the output signal. The CPU 81 may be started by using the signal at the start of the operation of the peak hold circuit, that is, the signal at the start of the one-shot multivibrator described above as a trigger. Thereafter, the CPU 81 may detect the end of necessary data transmission processing and automatically switch to the standby mode (power saving mode).
[0037]
If it does as mentioned above, the state of a lightning arrester can always be monitored and the soundness can be maintained. The reason why the detectors 75R, 75S, and 75T made of toroidal coils with magnetic cores are provided is that the value of the leakage current is sufficiently smaller than that of the lightning surge, so that a highly sensitive current transformer is adopted for the detector. . Further, since the output of the toroidal coil with a magnetic core is limited by magnetic saturation during a lightning strike, there is no possibility that the amplifier circuit 72 or the like will be damaged.
[0038]
【The invention's effect】
As described above, according to the present invention, data on how much electric energy has passed through the lightning arrester due to lightning strike is acquired, so that the actual operation history of the lightning arrester can be monitored to quantitatively determine the deterioration state. For example, it is possible to perform maintenance management in which lightning current energy passing through a specific lightning arrester is integrated continuously over a long period, the value is compared with a predetermined threshold value, and the lightning arrester is replaced when the threshold value is exceeded. In addition, if the current flowing through the lightning arrester during lightning strike is measured in real time and the measured value is to be transmitted as data, an expensive current detector with good response and a high-speed data transmission circuit are required. A high-speed data communication function is not necessary because the energy that the lightning surge has passed through the lightning arrester is processed and the result is stored in a circuit and then transmitted. In this case, the number of lightning arrester protection operations can be counted.
[Brief description of the drawings]
FIG. 1A is an actual wiring diagram showing a specific example of a lightning arrester operation monitoring device of the present invention, and FIGS. 1B and 1C are internal wiring diagrams showing an example of a detector 21. FIG.
FIG. 2 is a block diagram showing a specific circuit configuration of the lightning arrester operation monitoring device of the present invention.
3A is a specific connection diagram of an integration circuit 30, FIG. 3B is a specific connection diagram of a multiplication circuit 31, and FIG.
4A is a specific connection diagram of a reset circuit 33, and FIG. 4B is a specific connection diagram of a peak hold circuit 34;
FIG. 5 is an explanatory diagram of an apparatus that receives a signal transmitted from the operation monitoring apparatus 20;
6A and 6B are explanatory diagrams for demonstrating a specific operation of the detector 21, in which FIG. 6A shows operating characteristics for a rectangular wave, and FIG. 6B shows operating characteristics for a triangular wave.
7 is an explanatory diagram of signal waveforms before and after the multiplier circuit 31. FIG.
FIG. 8 is a block diagram showing an embodiment of a more specific embodiment of the apparatus of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Lightning arrester 11, 12 Terminal 13 Ground line 21 Detector 20 Operation | movement monitoring apparatus 25 Solar cell panel 26 Battery box 27 Antenna 23 Toroidal coil 24A, 24B Output terminal

Claims (1)

A detector that detects the current flowing through the grounding wire of the lightning arrester with an air-core toroidal coil, the lead wire of one terminal being disposed so as to penetrate the core portion, and a space for mounting the grounding wire provided. ,
An analog multiplier circuit that accepts a signal corresponding to the output signal of the detector and the terminal voltage of the lightning arrester, and calculates an instantaneous value of the power that has passed through the lightning arrester;
An analog integration circuit that performs time integration of the instantaneous value of the power and calculates the electrical energy that has passed through the lightning arrester by one lightning surge;
A peak hold circuit for holding a predetermined time the peak value of the output of the integrator circuit,
Digitally converting the peak value of the output of the held integration circuit to obtain data for monitoring the operation of the lightning arrester; and
The operation monitor that compares the output signal of the integration circuit with a certain reference value, starts a timer when an output signal equal to or greater than the reference value is obtained, and indicates the electrical energy that has passed through the lightning arrester due to one lightning surge A reset circuit for outputting a reset signal for clearing the output of the peak hold circuit after timing the time until the transmission of the data for transmission is completed,
A memory for storing the operation monitoring data output from the digital conversion circuit;
A communication control circuit that transmits the operation monitoring data stored in the memory to the monitoring side by radio waves;
The operation is started at the start of the operation of the peak hold circuit, and the operation is automatically terminated when the transmission of the operation monitoring data is finished after a predetermined time, and the operation monitoring data output from the digital conversion circuit is sampled. An editing process; a storage process in the memory; and an arithmetic processing unit that performs transmission control of operation monitoring data stored in the memory;
A lightning arrester operation monitoring device comprising a solar cell panel and a battery box for supplying driving power to each circuit .

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